28110520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{617}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 68078880

約数和(自身を除く): 39968360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 67, 68, 85, 134, 136, 170, 268, 335, 340, 536, 617, 670, 680, 1139, 1234, 1340, 2278, 2468, 2680, 3085, 4556, 4936, 5695, 6170, 9112, 10489, 11390, 12340, 20978, 22780, 24680, 41339, 41956, 45560, 52445, 82678, 83912, 104890, 165356, 206695, 209780, 330712, 413390, 419560, 702763, 826780, 1405526, 1653560, 2811052, 3513815, 5622104, 7027630, 14055260, 28110520]

約数ペア:

[(1, 28110520), (2, 14055260), (4, 7027630), (5, 5622104), (8, 3513815), (10, 2811052), (17, 1653560), (20, 1405526), (34, 826780), (40, 702763), (67, 419560), (68, 413390), (85, 330712), (134, 209780), (136, 206695), (170, 165356), (268, 104890), (335, 83912), (340, 82678), (536, 52445), (617, 45560), (670, 41956), (680, 41339), (1139, 24680), (1234, 22780), (1340, 20978), (2278, 12340), (2468, 11390), (2680, 10489), (3085, 9112), (4556, 6170), (4936, 5695)]